Ophthalmic mounting and method of making same



Sept. 20, 1932. c; 1 BAUSCH 1,878,366

7 OPHTHALMIC MOUNTING ANDMETHOD OF MAKINGSAME Filed June 25, 1952 CAR L L; BAUSCH INVENTCZR fi ATTORNEY- Patented Sept. '20, 1932 UNITED sTA ss PATENT OFFICE I CARL L. BAUSCH, or nocnns'rnn, NEW Yonx, Ass'IGNoR ro meson a Loin: orrIoAL comrm, or nocnns'rnn, new roam. A conronarron on NEW Yonx OPHTHALMIC MOUNTING AND METHOD OF MAKING SAME Application filed June 25,

30 in appearance and adaptedto be readily attached to a lens without the use of a screw. A further object is to provide an o hthalmic mounting having an imperforate ens strap provided with an undercut recess on its inner face whereby the mounting may be secured to a lens by anchoring a retaining element in said recess. These and other objects and advantages reside in certain novel features of construction, arrangement and combina- 30 tion of arts and in the method of constructing and arranging same as will hereinafter be more fully described and pointed out in the appended claims.

Referring to the drawing: E Fig. 1 is a front elevation of a pair of spectacles embodying my invention.

Fig. 2 is an enlarged fragmentary view of my improved lens strap.

Fig. 3 is a sectional view of same. :0 Fig. 4 is a top plan view of a blank before it is formed up into my strap.

One embodiment of my invention is shown on the drawing wherein indicates a pair of rimless spectacles having the lenses 11 5 connected by a brid e 12 provided with lens clamps 13. Attache to the lenses by clam s 14 are the end pieces 15 on which are pivotal y mounted the temples 16. The clamp 14 comprises a shoe 17 which contacts with the edge 1 of the lens and the two spaced straps 18 and 19 which contact, respectively, with opposite faces of the lens.

The strap 18 is imperforate and has an undercut recess 20 which is milled or otherwise formed on the inner face of the strap. The strap 19 has a countersunk aperture 21. The mounting is positioned on the lens with the aperture .21 o posite the opening 22 in lens 11. A fusib e retaining element 23 is then inserted in the aperture 21 and opening 1932. Serial No. 619,306.

22 and heat and pressure applied so as to force the fused material of the element 23 to fill the recess 20 and the opening and a erture, after which the element is all'owe to cool. The mounting is thereb securely attached to the lens. by the retaining element which has a portion 24' anchored in the recess and an enlarged head portion 25 in the countersunk opening.

I The retaining element 23 is preferably formed of a pyroxylin material which is sold under the trade-mark Lum'arithfl I can also use zylonite or other suitable substances such as phenolic resin materials... Such substances can be softened readil'y' a nd rendered plastic by a reasonable amount of heat. The retaining element should preferably be formed of a material whose softening point is above the boiling point of Water so that the cleansing of the spectacles in hot solutions would not loosen the mounted lenses. The mounting can be readily removed by applyin suificient heat to cause the element to melt an run out of the o ening and aperture. A new element will, 0 course, be necessary for remounting the lens.

My improved strap provides an eflicient, neat-appearing means for attachin mountings to lenses. The bother and disa vantages of loose screws are eliminated since no screw is used for attaching the mounting. The front surface of the strap 18 can be suitably engraved or ornamented so that the spectacles wi 1 present a neat, pleasing appearance when worn. Various modifications can obviously be made without departing from the spirit of my invention.

I claim:

1. An ophthalmic mounting comprising a member having two spaced straps positioned on oppositefaces of a lens having an opening, one of said straps being imperforate and having an undercut recess, the other strap having an aperture, and a nonmetallic retaining element positioned in said aperture and opening and having a portion anchored in said undercut recess.

2. An ophthalmic mounting having -"-in combination a lens strap positioned on the surface of a lens having an opening, said its strap having an undercut recess on its inner side and a retaining element positioned in and substantially filling said opening, said element being in contact with substantially 5 the entire wall of said opening and having an enlarged head seated in said recess.

3. An ophthalmic mounting comprising a" member having two spaced straps positioned on opposite surfaces of a lens having an opening, one of said straps being imperforateand havin a recessed portion on its inner face, the ot er of said straps having an'aperture, and a retaining element positioned in said aperture and opening,- said element having an enlarged head portion seated in said recessed portion.

4. An ophthalmic mounting comprising a member having two spaced straps positioned on opposite surfaces of a lens having an open ing, one of said straps being imperforate and having arecess on its inner side, said recess being opposite said opening, the other strap having an aperture opposite said opening, and a nonmetallic retaining element posi- 35 tioned in said opening and aperture and having a portion anchored in said recess.

5. The method of making an ophthalmic mounting which comprises forming an imrforate strap on a member, forming an unercut recess on the inner face of the strap, positioning said strap on the surface of a lens aving an opening, inserting a fusible retaining element in said opening and applying heat and pressure to said element to cause it to fill said opening and recess and thereby secure the mounting to the lens.

6. The method of attaching an ophthalmic mounting to a lens having an opening which comprises the steps of forming two spaced 0 straps on said mounting adapted .to contact with opposite surfaces of said lens adjacent said opening, forming an undercut recess on the inner face of one of said straps, forming an a erture-in the other strap, inserting a fusib e retaining element in said aperture Y and openingand anchoring said element in said recess by applying heat and pressure.

7. An ophthalmic mounting comprising a member having two spaced straps positioned, respectively, on opposite faces of a lens having an opening, the strap on the front face of the lens being imperforate and having on its inner side a recess provided with a mouth which is narrower than the body of the recess, a the other strap having an aperture, and fusible retaining means positioned in said opening and aperture and having an enlarged head seated in said recess.

CARL L. BAUSCH. 

